Concrete mixer



Aug. 13, 1929. J OWEN 1,724,850

CONCRETE MIXER Filed Oct. 25, 1926 INVENTOR J/r'G/f /1. OWE/l.

Patented Aug. 13, 1929.

UNITED STATES PATENT. OFFICE.

JACK M. OWEN, OF LONG BEACH, CALIFORNIA.

CONCRETE MIXER. Application filed October 23, 1926. Serial No. 143,810.

An object of my invention is to provide a one end of the cylinder 1,said opening exconcrete mixer which is light in weight, and tending intothe cylinder 2. A water intake may be readily transported from place to16 is provided in the cylinder 2 at the same place and which may be setupon the ground end in which the opening 15 is placed, thus adjacent thestructure requiring the concrete. as the dry aggregate falls through theopen- 00 Another object is to provide a concrete ing 15 it comes incontact with the water mixer in which the dry aggregate is posienteringthe intake 16*, and is thoroughly tively fed to the point where water issupmixed therewith. V plied thereto, thus insuring a properly pro- Thepaddles on the shaft 8 are so ar-.

10 ortioned concrete. ranged as to convey the concrete from one 05 Afurther object is to provide a mixer end of the cylinder 2 to the'other,in which which is simple in construction and which an outlet 16 isplaced. These paddles serve is highly ff ctive in op ration, N to thorouhly mix the dry aggregate and the Other objects, advantages and featuresof Water and provide a concrete of proper texinvention may appear fromthe accompanyture. It will be seen that the operation of ing drawing,the subjoined detailed descripmy mlxer is continuous in that the dryaggretion, nd th p nd d cl im gate may be constantly fed into the hopperI In the drawing 3, and the completed concrete is ejected from! Fig. 1is a side elevation of my mixer with the outlet 16. It will also beapparent that 20 parts broken away to show interior conas the IIllX ismoved toward the outlet 16 by 76 struction. the paddles lO, a lateralthrust or pressure Fig. 2 is an enlarged sectional view taken Will beexerted upon the same, thus causing on line 2, 2, Fig, 1, the mix topress constantly against the wall Fig. 3 is an end vie f m mixer. of thecylinder 2 until it is ejected from the 26 Referring more particularlyto the drawoutlet 16. The conveyor 7 positively moves in v a givenquantity of dry aggregate at any %Iy concrete mixer comprises twosuperglven speed of the shaft 5, consequently the posed cylindricalchambers 1, 2. A hop er amount of water entering at 16 can be gauged 3is mounted on the cylinder 1 and opens so tha a pr p rly proportionedconcrete is therein. Thi hopper i ad pted to r i e provided; and in mymixer the concrete will 86 the dry aggregate which goes into thecomalways be in the same proportions; that is, pleted concrete. Legs 4,4 are secured to the It Will not have an over-supply of water orcylinder 2 and are adapted to support the dr aggregate at any time.mixer. A shaft 5 extends longitudinally y mixer may be readilytransported from through the cylinder 1 and is journaled in place toplace on a truck and is liftedto the bearings 6, 6 at either endthereof. ground for use. When in position on the screw conveyor 7 ismounted on the ground and while being driven from suitable shaft 5, saidconveyor being adapted to move gearing on the tr 1? is n ss y to p thedry aggregate through th cylinder 1 s vide a place for the mixer inorder that it will be further described. A shaft 8 exmay not move. Forthis purpose, I provide tends longitudinally through the cylinder 2 anext nsible arm 17 secured to one end of and is journaled in bearings 9,9 at either the bearing 9, the other end being secured to end thereof.the truck axle or the like.

Paddles 10 are mounted on the shaft 8 and Having described my invention,I claim: 45 are adapted to move the concrete through 1- A c ncr te mixermpr sing a pair f 1 0 the cylinder 2 as will be further described.superposed hollow cylinders having a con- A gear 11 is secured to theshaft 8, said gear neoting opening at adjacent ends, a hopper beingrotated from a suitable source of power opening into the upper c linder,a screw consuch as.a truck used to convey the mixer. veyor in the uppercylin er for feedin mate- A chain 12 encircles the sprockets 13, 14 onrial to said opening, an outlet pipe in said the shafts 8, 5respectively, thus rotating the lower cylinder adjacent the end oppositeto conveyor 7 and paddles 10. said connecting opening and projectinglat- The dry a gregate is dumped into the hoperally from said lowercylinder and conveyper 3 and t e conveyor 7 moves the aggreing means inthe lower cylinder 0 erable to 66 gate along the cylinder 1- to anopening 15 at convey the material along said cy inder toward said outletpipe and simultaneously ex- (art a lateral thrust upon the material sothat it will be forced against the wall of the -cylinder and forciblyejected through said .hopper opening into said feed cylinder adjacentone end, a connecting opening adjacent the other end of said cylinderfor passage of dry cement from sald feed cylinder to said mixingcylinder, a screw conveyor in said feed cylinder for forcing dry cementtoward said connecting opening, a water intake in said mixing cylinderarranged so that the water strikes into the dry cement as it drops fromthe feed cylinder thus thoroughly comingling with said dry cement, ashaft extending the length of said mixing cylinder, impeller paddles onsaid shaft for mixin said water and cement and moving the m1x away fromsaid opening, an outlet in said mixing cylinder at the opposite end tosaid water inlet, and gearing connecting said shaft and conveyor tocause them to be rotated together.

- 3. A cement mixer comprising a hollow feed cylinder, a hollow mixingcylinder, a hopper opening into said feed cylinder, a passage betweensaid cylinders'for dry cement, a screw conveyor in said feed cylinderfor forcing dr'y cement toward said passage, a Water intake in saidmixing cylinder adjacent said passage arranged so that water strikesinto the dry cement as it is moved from said feed cylinder to saidmixing cylinder thus thoroughly comingling.

with said cement, a rotary mixing impeller member extending into saidmixing cylinder, and gearing connecting said conveyor and said impellermember to cause them to be rotated together.

In'testimony whereof, I aflix my signature.

JACK M. OWEN.

